Only the adware.Apparently 1.5.5 added this adware. 1.5.1 does not have it.The original author of IE View (Paul Roub) does not own/support it anymore, but mentions that IE View Lite is based on the (open) source. IE View Lite does not have the adware.

In my opinion:1) Mozilla should CLEARLY mark add-ons that contain adware in their Add-Ons store. Don't allow authors to bury it in a privacy statement.2) When an existing add-on is updated to include adware, the automatic updater MUST pop up a notification to the user stating that it now includes adware and offering to cancel the install and even offer to uninstall or disable.